18966921

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{1237}}^1$

素因数の和:1528

約数の個数: 16

約数和(自身を含む): 26740800

約数和(自身を除く): 7773879

約数列:

[1, 3, 19, 57, 269, 807, 1237, 3711, 5111, 15333, 23503, 70509, 332753, 998259, 6322307, 18966921]

約数ペア:

[(1, 18966921), (3, 6322307), (19, 998259), (57, 332753), (269, 70509), (807, 23503), (1237, 15333), (3711, 5111)]